Skin cell proliferation pathways

Skin cell proliferation pathways" is not a single molecule or receptor but rather refers to a collection of **cellular signaling cascades** that regulate the growth, division, and differentiation of skin cells. These pathways are essential for normal skin development, maintenance, wound healing, and regeneration. Key molecular players include: - **Epidermal Growth Factor Receptor (EGFR) pathway:** EGFR activation triggers downstream RAS/RAF/MEK/MAPK and PI3K-AKT signaling cascades that promote gene transcription leading to cell cycle progression and proliferation[6][9][3]. - **Transforming Growth Factor-beta (TGF‑β) pathway:** TGF‑β modulates both epidermal and dermal development by influencing induction, fate decision, migration, differentiation of skin cells; it can limit excessive epidermal proliferation while promoting differentiation[2][8]. - **Fibroblast Growth Factor (FGF) pathway:** FGF signals are crucial for dermis formation and overall skin regeneration[2]. - **Wnt/β-catenin pathway:** This enhances wound healing by upregulating genes involved in cellular proliferation and migration[1][7]. - **Hedgehog signaling pathway:** Especially active in basal cell carcinoma subtypes; regulates stemness and proliferative capacity in the epidermis[1][3]. Dysregulation or aberrant activation of these pathways is implicated in various diseases such as non-melanoma skin cancers (basal cell carcinoma/squamous cell carcinoma), chronic wounds, fibrosis, or inflammatory conditions[1][5]. Because "skin cell proliferation pathways" encompasses multiple targets rather than a discrete protein or receptor entity—and because it lacks a canonical name or abbreviation—it should not be considered a therapeutic target itself but rather as an umbrella term describing several interrelated molecular mechanisms. > “Different signalling pathways are involved in cellular growth... These include EGF/EGFR, IGF‑1R, Hedgehog/WNT/MAPK/PI3K etc. Aberrations... result in abnormal proliferation... which may lead to tumours.” [3] > “The binding between EGFR and ligand triggers downstream intracellular signaling... including the RAS/RAF/MEK-MAPK pathway controlling gene transcription/cell-cycle progression/proliferation...” [6] In summary: "Skin cell proliferation pathways" is not itself a specific druggable target but describes several interconnected signal transduction networks critical for cutaneous biology. For structured data extraction purposes—such as mapping drugs or biomarkers—one must refer instead to individual components like EGFR ("Epidermal growth factor receptor"), TGF‑β receptors ("Transforming growth factor beta receptor"), etc., each with their own canonical names/classifications.

Other names

Skin cell proliferation signaling pathwaysPathways regulating skin cell growthEpidermal proliferation pathways